CN212407542U - Piston pin, engine and vehicle - Google Patents
Piston pin, engine and vehicle Download PDFInfo
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- CN212407542U CN212407542U CN202021110992.0U CN202021110992U CN212407542U CN 212407542 U CN212407542 U CN 212407542U CN 202021110992 U CN202021110992 U CN 202021110992U CN 212407542 U CN212407542 U CN 212407542U
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Abstract
An embodiment of the utility model provides a piston pin, engine and vehicle, the piston pin includes: the piston pin body is detachably connected with the end cover; a first mounting groove is formed in the middle of a first end face, far away from the piston pin body, of the end cover, and a first annular bulge is formed in the periphery of the first end face; the piston pin body is of a hollow cylindrical structure, a second mounting groove is formed in the middle of a second end face, far away from the end cover, of the piston pin body, and a second annular bulge is formed in the periphery of the second end face. The embodiment of the utility model provides a solve the piston pin during operation and deviate from the problem that brings the serious fault because of the axial.
Description
Technical Field
The embodiment of the utility model provides a relate to car technical field, especially relate to a piston pin, engine and vehicle.
Background
The piston pin is an important part in the engine, bears the periodic alternating load of engine explosion pressure and piston group inertia force, and operational environment is very abominable, and along with the promotion of engine performance, half floating piston pin structure can not satisfy the operation requirement yet, and the piston pin is more and more at present adopts full floating structure, and under this kind of structure, for preventing piston pin axial float, generally be equipped with the retaining ring groove in the piston pin boss department at piston pin both ends to assemble the retaining ring, in order to restrict piston pin axial displacement.
Referring to fig. 1, fig. 1 is a schematic diagram of a common full-floating piston pin structure and a thrust structure thereof provided in the prior art, and the common full-floating piston pin and thrust structure includes a piston 1, a piston pin 2, and two check rings 3 distributed on both sides.
The prior art has the following defects:
the retaining ring of restriction piston pin axial displacement generally is formed by the spring steel wire bending, and the pressure equipment is gone into in the retaining ring groove of piston pin boss, but the retaining ring diameter is generally less, and is limited to the piston pin limiting action, and the retaining ring easily drops when receiving yawing force and piston pin extrusion moreover, and then leads to the piston pin axial to deviate from, brings the serious fault, and this failure mode is comparatively common.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a piston pin, engine and vehicle to solve current piston pin during operation and deviate from the problem of bringing serious trouble because of the axial.
In order to solve the technical problem, the utility model discloses a realize like this:
in a first aspect, an embodiment of the present invention provides a piston pin, including: the piston pin body is detachably connected with the end cover;
a first mounting groove is formed in the middle of a first end face, far away from the piston pin body, of the end cover, and a first annular bulge is formed in the periphery of the first end face;
the piston pin body is of a hollow cylindrical structure, a second mounting groove is formed in the middle of a second end face, far away from the end cover, of the piston pin body, and a second annular bulge is formed in the periphery of the second end face.
Optionally, an oil passage is arranged at the central part of the piston pin body, and the oil passage penetrates through the piston pin body along the radial direction;
the oil groove is arranged on the outer circular surface of the piston pin body and symmetrically distributed with the axis of the piston pin body, and the oil groove passes through the joint of the oil passage and the outer circumference of the piston pin body.
Optionally, the oil groove is a spiral line or a straight line perpendicular to the first end surface.
Optionally, the gallery diameter is 1/10 of the piston pin body outer diameter.
Optionally, the depth of the oil groove is not more than 1 mm.
Optionally, the joint is chamfered.
Optionally, the first annular protrusion and the first end surface are not in the same plane, and the second annular protrusion and the second end surface are not in the same plane.
Optionally, the height of each of the first annular protrusion and the second annular protrusion is not greater than 3 mm.
In a second aspect, embodiments of the present invention further provide an engine, including a piston pin according to any one of the first aspect.
In a third aspect, embodiments of the present invention further provide a vehicle including the engine according to any one of the second aspect.
The embodiment of the utility model provides an in, through design detachable piston pin structure and set up the bellying that has the thrust effect at piston pin both ends, solved among the prior art piston pin during operation and deviate from the problem that brings serious trouble because of the axial.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of a conventional full floating piston pin structure and its thrust structure provided in the prior art;
fig. 2 is a schematic structural thrust diagram of a piston pin according to an embodiment of the present invention;
fig. 3 is a schematic exploded view of a piston pin structure according to an embodiment of the present invention;
fig. 4 is a front view of a piston pin according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of a piston pin according to an embodiment of the present invention;
fig. 6 is a side view of a piston pin according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 3, fig. 3 is a schematic view illustrating a split of a piston pin structure according to an embodiment of the present invention, which provides a piston pin, including:
the piston pin body 4 and the end cover 5, wherein the piston pin body 4 is detachably connected with the end cover 5;
a first mounting groove 53 is formed in the middle of a first end surface 51 of the end cover 5, which is far away from the piston pin body 4, and a first annular bulge 52 is formed on the periphery of the first end surface 51;
the piston pin body 4 is of a hollow cylindrical structure, a second mounting groove 43 is arranged in the middle of a second end face 41, far away from the end cover 5, of the piston pin body 4, and a second annular bulge 42 is arranged on the periphery of the second end face 41.
Fig. 2 is a schematic structural thrust diagram of a piston pin according to an embodiment of the present invention;
fig. 4 is a front view of a piston pin according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of a piston pin according to an embodiment of the present invention;
fig. 6 is a side view of a piston pin according to an embodiment of the present invention.
In some embodiments of the present invention, optionally, the piston pin body 4 and the end cover 5 are in threaded connection; that is, the side of the piston pin body 4 away from the second end surface 41 is provided with internal threads corresponding to the threads provided on the side of the end cover 5 away from the first end surface 51, and the end cover 5 is fastened with the piston pin body 4 by the threads; in actual use, the piston pin can be integrally installed by fixing the end cover 5 and then fixing the piston pin body 4 on the end cover 5.
In some embodiments of the present invention, the first mounting groove 53 or the second mounting groove 43 may be a hexagon or a triangle, which is easy to be used with a mounting tool, so as to facilitate the overall mounting of the piston pin.
In some embodiments of the present invention, the first end surface 51 and the second end surface 41 are symmetrically disposed, so that the overall stress distribution of the piston pin is uniform, and the operation is more stable.
The embodiment of the utility model provides an in, through design detachable piston pin structure and set up the bellying that has the thrust effect at the gudgeon pin both ends, thoroughly stop the gudgeon pin thrust and drop the engine fault problem that leads to the gudgeon pin departure and then produce with the retaining ring, improved engine operational reliability.
In some embodiments of the present invention, optionally, an oil passage 6 is provided at a central portion of the piston pin body 4, and the oil passage 6 radially penetrates through the piston pin body 4;
an oil groove 7 is formed in the outer circular surface of the piston pin body 4, the oil groove 7 is symmetrically distributed along the axis of the piston pin body 4, and the oil groove 7 passes through a joint 44 between the oil passage 6 and the outer circumference of the piston pin body 4. In the embodiment of the utility model, through set up the oil duct 6 through piston pin pinhole center and at the oil groove 7 of piston pin excircle surface on the piston pin, can show the lubricated environment that improves the piston pin during operation, reduce the piston pin and the vice surface wear of corresponding friction, bite and die the scheduling problem, solved in the work process in the past, the piston pin mainly carries out small amplitude swing motion in the piston pin base hole, this also makes the lubricated environment between piston pin and piston pin hole and the connecting rod stub hole relatively poor, very easily has the problem of lubricated badly; the oil grooves 7 are symmetrically distributed along the axis of the piston pin body, so that stress of the piston pin in all directions is uniform during normal work, and the stability of the piston pin is improved.
In some embodiments of the present invention, optionally, two oil grooves 7 are disposed on the outer circumferential surface of the piston pin body 4, the two oil grooves 7 are symmetrically distributed along the axis of the piston pin body 4, and the oil grooves 7 pass through the oil passage 6 and the connecting portion 44 of the outer circumference of the piston pin body 4.
In some embodiments of the present invention, optionally, the oil groove 7 is a spiral line or a straight line perpendicular to the first end surface 51.
As shown in fig. 4, the oil groove 7 is linear.
The embodiment of the utility model provides an in, linear type or helix type oil groove easily forms, and at the during operation, linear type or helix type structure are balanced at piston pin surface atress, have improved the stability of piston pin.
In some embodiments of the present invention, optionally, the oil passage 6 has a diameter of 1/10 of the outer diameter of the piston pin body 4.
The embodiment of the utility model provides an in, too big oil duct 6 diameter can influence piston pin body intensity, and control oil duct 6 diameter does 1/10 of piston pin body 4 external diameter had both guaranteed the lubricated effect of piston pin during operation oil duct, did not influence piston pin self intensity again.
In some embodiments of the present invention, optionally, the depth of the oil groove 7 is not more than 1 mm.
The embodiment of the utility model provides an in, 7 depths of oil groove can reduce the intensity of piston pin body 4 too deeply, and the degree of depth of control oil groove 7 has guaranteed the intensity of piston pin body 4 in 1 mm.
In some embodiments of the present invention, optionally, the joint 44 is chamfered.
The embodiment of the utility model provides an in, carry out the chamfer to junction 44 and handle, it is level and smooth to have guaranteed the transition when fluid flows, has further improved the stability of piston pin.
In some embodiments of the present invention, optionally, the first annular protrusion 52 and the first end surface 51 are not in the same plane, and the second annular protrusion 42 and the second end surface 41 are not in the same plane.
In some embodiments of the present invention, taking the first annular protrusion 52 and the first end surface 51 as an example, the first annular protrusion 52 may be formed by extending the first end surface 51 outwards, and at this time, the first annular protrusion 52 and the first end surface 51 are located in the same plane, and an included angle therebetween is 180 degrees; the first annular protrusion 52 and the first end surface 51 may also be arranged at an obtuse angle, and the first annular protrusion 52 and the first end surface 51 are not in the same plane.
In some embodiments of the present invention, optionally, the height of the first annular protrusion 52 and the height of the second annular protrusion 42 are not greater than 3 mm.
The embodiment of the utility model provides an in, annular arch has thrust and positioning action, and the annular arch within 3mm had both satisfied the thrust and the location demand of piston pin, did not influence the installation of piston pin again.
The embodiment of the utility model provides a still provide an engine, include the piston pin as above-mentioned any embodiment.
The embodiment of the utility model provides an in, provide an engine, can thoroughly stop the piston pin departure that the retaining ring that the piston pin thrust was used drops and leads to and then the engine fault problem that produces, improved engine operational reliability.
The embodiment of the utility model provides a vehicle is still provided, include as above-mentioned any embodiment the engine.
The embodiment of the utility model provides an in, provide a vehicle, the engine of vehicle can thoroughly stop the piston pin departure that the retaining ring that the piston pin thrust was used drops and lead to and then the engine failure problem that produces, has improved the reliability of vehicle.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.
Claims (10)
1. A piston pin, comprising: the piston pin body is detachably connected with the end cover;
a first mounting groove is formed in the middle of a first end face, far away from the piston pin body, of the end cover, and a first annular bulge is formed in the periphery of the first end face;
the piston pin body is of a hollow cylindrical structure, a second mounting groove is formed in the middle of a second end face, far away from the end cover, of the piston pin body, and a second annular bulge is formed in the periphery of the second end face.
2. The piston pin as described in claim 1, wherein said piston pin body central portion is provided with an oil passage extending radially through said piston pin body;
the oil groove is arranged on the outer circular surface of the piston pin body and symmetrically distributed with the axis of the piston pin body, and the oil groove passes through the joint of the oil passage and the outer circumference of the piston pin body.
3. The piston pin of claim 2 wherein said oil groove is helical or linear perpendicular to said first end surface.
4. The piston pin as described in claim 2, wherein said gallery diameter is 1/10 of said piston pin body outer diameter.
5. A piston pin according to claim 2, wherein the depth of the oil groove is no greater than 1 mm.
6. A piston pin according to claim 2, wherein said joint is chamfered.
7. The piston pin of claim 1 wherein said first annular projection is not in the same plane as said first end surface and said second annular projection is not in the same plane as said second end surface.
8. The piston pin of claim 1 wherein said first annular lobe and said second annular lobe are each no greater than 3mm in height.
9. An engine, characterized in that it comprises a piston pin according to any of claims 1-8.
10. A vehicle characterized by comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021110992.0U CN212407542U (en) | 2020-06-16 | 2020-06-16 | Piston pin, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021110992.0U CN212407542U (en) | 2020-06-16 | 2020-06-16 | Piston pin, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407542U true CN212407542U (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021110992.0U Active CN212407542U (en) | 2020-06-16 | 2020-06-16 | Piston pin, engine and vehicle |
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| CN (1) | CN212407542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175524A (en) * | 2021-04-27 | 2021-07-27 | 湖北博英精工科技股份有限公司 | Piston pin |
-
2020
- 2020-06-16 CN CN202021110992.0U patent/CN212407542U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175524A (en) * | 2021-04-27 | 2021-07-27 | 湖北博英精工科技股份有限公司 | Piston pin |
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